Primer.



Nb 762,269. I PATENTED'JUNE 14, 1904.

1 U. A. BAILEY.

PRIMER.

APPLICATION FILED NOVJZO, 1903.

N0 MODEL.

witnesses NITE TATES Patented June 14, 1904:.

CHARLES A. BAILEY, OF CROMW ELL, CONNECTICUT.

PRIMER.

SPECIFICATION forming part of Letters Patent No. 782,269, dated June 14.1904. Application no .Novenibar 20,1903. Seria1No.l81,Q83. (No mod e1.)

' To all-whom it may concern:

Be it known that I, CHARLES A. BAILEY, a citizen of the United States,residing at Cromwell, in the county of Middlesex and State ofConnecticut, have invented aPrimer, of which the following is aspecification.

The primary object of my invention is to provide a primer or fulminatecap for cartridges which will dispense entirely with the employment ofan anvil and will permit the use of a very sensitive priming material.

The invention contemplates the provision of a primer comprising a metalcap the closed end of which is comparatively thick to thoroughly protectthe sensitive priming material or fulminate which is placed therein andthe opposite or body portion gradually reduced in thickness to its outerend and the latter contracted or closed to offer therequ'ired resistanceto the impact of the firing-pin on the contents of the cap, all ashereinafter fully. described andmore specifically set forth in theappended claims.

In the accompanying drawings, forming a part of this specification,Figure 1 is a sectional view, somewhat enlarged, illustrating thepreferred form of construction of primer. Fig. 2 is a plan view lookingat the outer end of the primer. Fig. 3 is a similar view looking at theopposite end or head of the primer. Fig. 4 is a sectional view of amodification of the invention. Fig. 5 is asectional view showing theapplication of the sensitive priming material and cement.

Similar letters of reference indicate similar parts in all the figuresof the drawings.

Referring to said drawings, the letter A designates the metal cap,which, as illustrated in Figs. 1, 2, 3, and 5, is providedwith the usualperipheralflange a at the closed end thereof; but it is obvious suchflange may be dispensed with, as illustrated in the form shown in Fig.4.

In carrying out my invention the closed end of the cap Athat is, thehead e and adjacent sides a'-is comparatively thick,and the sides beyond'salid thickened portio'nare gradually reduced in thickness to the outerend of the cap, so that after the priming material of the sides or outerendof the cap may be closed either by corrugations, as (1. or drawntogether to a point in the shape of a cone, as in Fig. 4.

The heada of the cap is countersunk, as at m to form a thin wall againstwhich the firing-pin will strike, and this thin wall in the presentinstance is provided by making the countersink in the outer side, as inFigs. 1, 3, and 5, or in the inner side, as in Fig. 4.

In completing the primer a certain amount of very sensitive primingmaterial or fulminate-paste, as b, is placed in the cap, and after thesame is dry a-varnis'h or cement, as b, is introduced to cover the same.The end of the cap is then closed in before described. p

By providing the closed end or head of the cap with the thick wallsthedanger of exploding the primerin forcing the same into the cartridgeis removed, inasmuch as the thick portion of the side walls of the capwill be the part that impinges against the sides of the opening in thecartridge during the operation, and by countersinking theend wa ll orhead in the outer side,-as in Figs. 1, 3, and 5, the thin portionagainst which the firing-pin is to strike is protected.

In use the primer will readily explode when struck by the firing-pin,inasmuch asthe closed outer end will resist the impact sufliciently toexplode the sensitive fulminate material, and the latter when explodedwill readily burst open said closed end, owing to the metal being thinatthis part of the cap. The primer therefore dispenses with the use. ofthe ordinary anvil, and consequently produces a cheaper construction.

As heretofore stated, the outer end may be closed in any suitablemanner; but, as illustrated inthe preferred construction, Figs. 1, 2, 3,and 5, the corrugations will offer a better resistance to the impact ofthe firing-pin to partly fill the cap with a sensitive priming materialand then cover the same with a less sensitive fulminate.

Byclosing the cap in the manner herein shownand described-that is, byflaring the sides inward upon the varnish or cenient the said closed endwill more readily open out at the flash of the priming material andallow the flame to quickly ignite the powder charge of the cartridge.

Having thus described my invention, what I claim as new, and desi'retosecure by Letters Patent, is'- 1. A primer, comprising a cap the headand adjoining side Walls of which are thickened, a -sensitive primingmaterial placed in the cap and protected by the thickened walls, a lesssensitive material placed over the priming material, and the outer endof the cap closed on the latter, substantially as shown' and for thepurpose set forth. r 2. As an improved article of manufacture,-acenter-fire primer comprising acap having a solid end wall with a thincentral portion against which the firing-pin strikes,a sensitivefulminate placed in the cap against said end Wall, a hard cement orvarnish placed over the fulminate and adapted to resist the impact ofthe firing-pin to explode the fulm'inate, and

the outer end ofthe cap closed on the cement or varnish to reinforce thesame.

3., A primeif comprising a cap the head and adjoining sidewalls of whichare thickened, a sensitive priming material placed in the cap andprotected by the thickened walls, a varnish or cement placed thereover,and the outer end of the cap closed over the latter by corrugations,substantially as shown and described. 4. A primer, comprising aca'pthelliead and adjoining side walls of which are thickened, a

sensitive priming material placed in the cap,

and the outer end of the cap closed over the latter. I

5. A primer, comprising a cap theliead and adjoining side walls of whichare thickened and from which the sides are gradually reduced inthickness, a fulminate placed in the cap, and the outer end of thelatter closed upon the fulniinate.

v6. A primer, comprisingacap the head and adjoining side walls of whichare thickened, a-

.tliin portion formed in the head by a countersink in theoutersidetliereof, a fulminate placed in the cap, and the outer'end ofthe latterclosed 0 er the fulminate. y

7. A primer, comprising a cap the head and adjoining side walls of whichare thickened, a thin portion formed at the center of the head by acountersink in the outer side of tl 1e latter,

a sensitive fulminate placed in the cap, and a varnish orcement placedover saidsensitive fulm-inate, the outer end of the cap being closedoverthe cement. J r

8. A primer, comprising a cap the head and ad oining side walls of whichare thickened, a

- thin portion formed at the center of the head and against which theliring-pin strikes a sen sitive fulminate placed in the cap andprotected bythe aforesaid thickened walls, a cement placed overthesensitive t'uhninatmand the outer end of the cap closed bycorrugations. I

' In testimony whereof I have signed my name to this specification inthe presence of two suh-' scribing witnesses. a

' (HAS. A. BAILEY. Witnesses:

' ELEANUR BIXKH, ARTHUR BUARDMAN

